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Electromagnetic valve for automatic gearbox

A technology of automatic transmission and solenoid valve, which is applied in the direction of lifting valve, valve details, valve device, etc., can solve the problems affecting the performance and service life of solenoid valve, difficulty in maintaining coaxiality, difficulty in processing and assembling, etc., and achieve structural Compactness, reduced processing cost, and reduced processing difficulty

Inactive Publication Date: 2017-02-22
XINGYU ELECTRON NINGBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The solenoid valve is used as the actuator of the electronic control system of the engine. Its main function is to control the on-off of the oil circuit. The solenoid valve opens and closes frequently during use, which requires good coaxiality between the moving parts. The more moving parts, the more difficult it is

Method used

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  • Electromagnetic valve for automatic gearbox
  • Electromagnetic valve for automatic gearbox
  • Electromagnetic valve for automatic gearbox

Examples

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Example Embodiment

[0022] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.

[0023] Such as Figure 1 to Figure 3 Shown is a schematic diagram of the structure of the present invention,

[0024] The reference signs are: valve body 1, center cavity 1a, P port 11, A port 12, step surface 13, boss 14, valve core 2, containing cavity 2a, T port 21, moving iron core 3, spring 4. Steel ball 5, ejector rod 6, first limit ring 71, second limit ring 72, first rectangular ring 81, second rectangular ring 82, third rectangular ring 83, coil assembly 9, housing 91, back cover Plate 92, gasket 93.

[0025] Such as Figure 1 to Figure 3 As shown,

[0026] A solenoid valve for an automatic transmission, comprising a valve body 1 and a valve core 2 assembled in the central cavity 1a of the valve body 1. The valve body 1 is provided with P port 11 and A port 12, and the center of the valve core 2 A T port 21 is opened, and an electromagnet assembly ...

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Abstract

The invention discloses an electromagnetic valve for an automatic gearbox. The electromagnetic valve comprises a valve body and a valve element assembled in a center cavity of the valve body. The valve body is provided with an opening P and an opening A. An opening T is formed in the center of the valve element. The valve body is fixedly provided with an electromagnet assembly. The electromagnet assembly comprises a shell, a coil assembly in the shell and a movable iron core in the center of the coil assembly. The center cavity is internally provided with a step surface located between the opening P and the opening A. The center cavity is internally provided with a spring and a steel ball. One end of the spring abuts against the valve element, the other end of the spring abuts against the steel ball, the steel ball is matched with the step surface to control connection and disconnection between the opening P and the opening A, an ejector rod penetrates the center of the valve body, one end of the ejector rod abuts against the movable iron core, and the other end of the ejector rod abuts against the steel ball. The electromagnetic valve for the automatic gearbox has the beneficial effects that the structure is simple, the service life is long, the machining requirement for part coaxiality is lowered, and the machining cost is low.

Description

technical field [0001] The invention relates to a component of an automatic transmission, in particular to a solenoid valve of an automatic transmission. Background technique [0002] The gearboxes used in automobiles are gradually replaced by automatic gearboxes, especially in mid-to-high-end cars, almost all automatic gearboxes are used. More and more modern vehicle engine electronic control systems tend to choose solenoid valves as actuators, because solenoid valves can directly control fuel injection volume and timing, and part of the fuel injection rate can also be realized by solenoid valves. In this way, the three control items can be completed with only one actuator, which greatly simplifies the hardware of the entire electronic and electronic system. Therefore, the solenoid valve is one of the most important components in the current automatic transmission. On the other hand, the on-off solenoid valve is relatively simple, and the drive control part is far simpler ...

Claims

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Application Information

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IPC IPC(8): F16K1/14F16K31/06F16K27/02
CPCF16K1/14F16K27/0245F16K27/029F16K31/0665F16K31/0675
Inventor 翁国均王波黄国建毛杨榕余文理翁杭秦
Owner XINGYU ELECTRON NINGBO CO LTD
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